Features：
Pen shape design is convenient to operate.
A variety of grinding heads meet the needs of different work scenarios.
With battery and lithium battery charger, practical and environmentally friendly.
Suitable for all kinds of materials, such as wood, walnut, olive, jade, etc.
Specifications：
Color：Gold, silver (random delivery)
Material：Metal
Style：10pcs,20pcs,22pcs,60pcs（optional）
Speed: 23,000 rpm
Grinding needle diameter: 2.35MM
Battery type: ICR10440 lithium battery
Battery capacity 350MAH 3.7V
Charger input: 100-240V
Charger output: 3.7V 500MA
Size：12.5cm / 4.92in
Wight：
10pcs：260g
20pcs：280g
22pcs：300g
60pcs：380g
Package List：
Package List：
1 * Engraving Pen
1 * Charger
2 * ICR10440 lithium battery
4 * Carving Heads
1 * Inner Hexagon Screw
1 * Screwdriver
12 * Nail polish head